Events Events Publication of the first blue law by Constantine I of the Roman Empire: trade is forbidden on Sundays; agriculture is allowed The Roman Catholic church is allowed to hold property Births Deaths Categories: 321 ... 322 is also a magic number for Skull and bones secret society. ... Events July 3 - Battle of Adrianople: Constantine defeats Licinius, forcing Licinius to retreat to Byzantium. ... Events Constantine becomes the sole emperor of the Roman Empire. ... Events September 14 - Discovery of the (alleged) True Cross by Vatican City, where St. ... Events September 1 - start of first indiction cycle Christianity was adopted as a state religion of Georgia. ... Events May 9: Athanasius is elected bishop of Alexandria Births Valens, Roman Emperor Wong Tai Sin Deaths April 17: Alexander I, Patriarch of Alexandria Categories: 328 ... Events End of the Han Zhao state. ... This is a list of decades which have articles with more information about them. ... Centuries: 2nd century - 3rd century - 4th century Decades: 240s - 250s - 260s - 270s - 280s - 290s - 300s - 310s - 320s - 330s - 340s Years: 290 291 292 293 294 295 296 297 298 299 300 Significant people Diocletian, Roman Emperor Maximian, Roman Emperor Categories: 290s ... Centuries: 3rd century - 4th century - 5th century Decades: 250s - 260s - 270s - 280s - 290s - 300s - 310s - 320s - 330s - 340s - 350s 290 300 301 302 303 304 305 306 307 308 309 Significant people Diocletian, Roman Emperor Maximian, Roman Emperor Categories: 300s ... Centuries: 3rd century - 4th century - 5th century Decades: 250s - 260s _ 270s - 290s - 300s - 310s - 320s - 330s - 340s - 350s - 360s Years: 310 311 312 313 314 315 316 317 318 319 Significant people Constantine, Roman Emperor Licinius, Roman Emperor Maximinus, Roman Emperor Categories: 310s ... Centuries: 3rd century - 4th century - 5th century Decades: 270s - 280s - 290s - 300s - 310s - 320s - 330s - 340s - 350s - 360s - 370s Years: 320 321 322 323 324 325 326 327 328 329 Events Constantine I of the Roman Empire starts legislating Christian beliefs into civil law. ... Centuries: 3rd century - 4th century - 5th century Decades: 280s - 290s - 300s - 310s - 320s - 330s - 340s - 350s - 360s - 370s - 380s Years: 330 331 332 333 334 335 336 337 338 339 Events Significant People Constantine I Constantine II Constantius II Constans Categories: 330s ... Centuries: 3rd century - 4th century - 5th century Decades: 290s - 300s - 310s - 320s - 330s - 340s - 350s - 360s - 370s - 380s - 390s Years: 340 341 342 343 344 345 346 347 348 349 Events Ulfilas missionary to the Goths Significant People Constans, Roman Emperor Constantius II, Roman Emperor Categories: 340s ... Centuries: 3rd century - 4th century - 5th century Decades: 300s - 310s _ 320s - 330s - 340s - 350s - 360s - 370s - 380s - 390s - 400s Years: 350 351 352 353 354 355 356 357 358 359 360 Events: Categories: 350s ... These pages contain the trends of millennia and centuries. ... (2nd century - 3rd century - 4th century - other centuries) Events The Sassanid dynasty of Persia launches a war to reconquer lost lands in the Roman east. ... (3rd century - 4th century - 5th century - other centuries) As a means of recording the passage of time, the 4th century was that century which lasted from 301 to 400. ... (4th century - 5th century - 6th century - other centuries) // Events Rome sacked by Visigoths in 410. ...

• May 20 - First Council of Nicaea - first "Ecumenical Council" of the Christian Church: The Nicene Creed is formulated, the date of Easter is discussed.
• Gladiatorial combat is outlawed in the Roman Empire.
• The Church of the Nativity is built in Bethlehem
• Jin Cheng Di succeeds Jin Ming Di as emperor of China.

Births May 20 is the 140th day of the year in the Gregorian Calendar (141st in leap years). ... The First Council of Nicaea, which took place during the reign of the emperor Constantine in 325 AD, was the first ecumenical (from Greek oikumene, worldwide) conference of bishops of the Christian Church. ... The Nicene Creed, or the Icon/Symbol of the Faith, is a Christian statement of faith accepted by the Roman Catholic, Eastern Orthodox, Anglican, and most Protestant churches. ... Easter is the most important religious holiday of the Christian liturgical year, observed in March, April, or May to celebrate the resurrection of Jesus from the dead after his death by crucifixion (see Good Friday), which Christians believe happened at about this time of year around AD 30-33. ... Pollice Verso, an 1872 painting by Jean-Léon Gérôme, is a well known history painters researched conception of a gladiatorial combat. ... The Roman Empire is the term conventionally used to describe the Ancient Roman polity in the centuries following its reorganization under the leadership of Octavian (better known as Caesar Augustus). ... View of The Church of the Nativity from Manger Square The Church of the Nativity in Bethlehem is one of the oldest continuously operating churches in the world. ... Bethlehem (Arabic بيت لحم Bayt Laḥm house of meat; בית לחם house of bread, Standard Hebrew Bet léḥem / Bet láḥem, Tiberian Hebrew Bêṯ léḥem / Bêṯ lāḥem) is a Palestinian city in the West Bank of Palestine. ... Format of naming convention in English is under discussion at Wikipedia talk:Naming conventions (Chinese) and Wikipedia talk:Naming conventions (Chinese)/monarchical titles. ... This page is a candidate for speedy deletion. ...

• Procopius, attempted usurper of the Roman Empire (approximate date)
• Ammianus Marcellinus, Roman historian (approximate date)

Deaths Procopius (c. ... The Roman Empire is the term conventionally used to describe the Ancient Roman polity in the centuries following its reorganization under the leadership of Octavian (better known as Caesar Augustus). ... Ammianus Marcellinus, thought by some to be the last Roman historian of worth, was born about A.D. 325‑330 likely at Antioch (the likelihood hingeing on whether he was the recipient of a surviving letter to a Marcellinus from a fellow citizen of Antioch). ... A historian is a person who studies history. ...

• Jin Ming Di, emperor of China.
• Licinius, Roman Emperor
• Metrophanes, the first Patriarch of Constantinople